Mail fails to import messages after 10.8.5 update

Question

After the update Mail fails to import my messages and then quits.
First screen says: Welcome to Mail. To use the new features your existing Mail messages need to be imported....
Then when I click continue it says: The import failed. An error occurred during the import. Make sure you have available space in your home folder and try again.
I run mail from inside the container (MacOS folder) and here's what it reads:
Last login: Mon Oct 21 22:39:50 on ttys001
/Applications/Mail.app/Contents/MacOS/Mail ; exit;
Gustavos-MacBook-Air:~ calazans$ /Applications/Mail.app/Contents/MacOS/Mail ; exit;
2013-10-21 23:03:45.907 Mail[778:707] Using V2 Layout
2013-10-21 23:04:43.483 Mail[778:9617] Copy from /Users/calazans/Library/Mail/V2/MailData/Envelope Index to /Users/calazans/Library/Mail/V2/MailData/Envelope Index-26 failed with 10: not an error
logout
[Process completed]
I have already reinstalled combo 10.8.5
I have already booted on recovery console and repaired permissions
I have already installed the Supplemental update 10.8.5
I have created another standard user and inside this new account Mail will work perfectly.
Nothing worked so far. Cherry on the cake : I have a message saying I have a recall on my MBAir SSD drive.
Please advise on how to solve this issue !
Cheers,
ZChef

Answer 1

Intermediate answer: The app launched correctly and the import process has started.
It is taking ages though. Over 3 hours for around 30K messages.
The message count sometimes gets stuck for 20-30 minutes or so and then starts counting again...
There are ~5K messages left to be imported. I'll let you know if it goes ok.
Stay tuned for the next and hopefully last episode.
Cheers,
ZChef